TY JOUR TI Problems of admissibility of the results of operational investigative activities in cassation and supervisory instances KW admissibility of evidence KW operational-investigative activity KW cassation proceedings KW supervisory review KW test purchase KW evidence legalization JO BULLETIN OF THE MOSCOW UNIVERSITY OF THE MINISTRY OF INTERNAL AFFAIRS OF RUSSIA AU Odinazoda, I.A. PY 2025 IS 0 PB Moscow University of the Ministry of Internal Affairs of Russia named after V.Ya. Kikot